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73-87 Chevy _ GMC Trucks => Interior & Equipment => Heating, Ventilation & Air Conditioning (HVAC) => Topic started by: stepside78 on September 13, 2010, 06:59:39 pm

Title: heater/ac vacuum lines
Post by: stepside78 on September 13, 2010, 06:59:39 pm

Does anyone have a schematic for the vacuum line that run from the controller?  I have 5 lines coming out I know where 4 go. The diaphragms and the doors work manually but, not with the vacuum lines.  78 stepside 350 4brl